Max internal adjustment 40MOA That sounds rather limiting, since at best you would have to try to find a 15min rail. I doubt you could zero it on a 20MOA rail since it would be at the very limit of its adjustment.

The 4x16x50 Monarchs have 60MOA of adjustment, just don't have the exposed turrets.

Or try the 3-12x42 M223 BDC. The BDC versions have MOA marked turrets and with the reduced magnification have 60MOA of internal travel. It sucks that Nikon will not let you choose your reticle and the turret. Many will find the BDC turret "too busy". But all of the M223 Plex versions have turrets engraned in yards for very specific calibers/bullets which are extremely limiting and Nikon does not offer alternative turrets for your scope.

In addition, I have heard that it you raise the turret it "decouples" and if you do it accidentally you lose zero. So it sounds like Nikon were not thinking when they did this range of scope turrets.

Particularly if for an AR, Opticsplanet is listing it at $430 and they are throwing in the one piece mount too. I believe the mount by itself is typically $115 ?

Its all a question of how far you want to shoot. I doubt the scope will to to 1000 with max +20 available, but then how many AR shooters are shooting to 1000 yards ? Out to 500 would probably be fine. I just recently heard of the turret re-set issue. Hard to believe anyone would design turrets that way.

The M-308 scope comes with the M-308 mount which has 20 MOA built into it's base for long range shooting. I doubt you will have any issues at all regarding not enough internal adjustment. I have a Nikon M-308 BDC 800 that will be going on my Remington 700 AAC in .308. Should be a real shooter and I will be getting it out to 700 yards in the next few months. Make sure you check out Nikon's Spot On program, I think it will answer all your ballistic question's.

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If the scope has more than 40MAO of internal adjustment, then Nikon should update the specifications on their website. Nikon is silent regarding the inclination of the M308 mount. I believe that in fact it is a "regular" M223 mount with no inclination. Technically, it is impossible for the turret of have only +20 and -20 motion and then to zero on a 20 minute base. The lower magnification M223 scopes (3-12x42) have 60 MOA of internal travel, so using a 20 minute base on one of those is no problem.

To get more internal travel in a Nikon scope you have to go up in size to the 4-16x50 Monarch, but that has no exposed turrets.

The M-308 scope comes with the M-308 mount which has 20 MOA built into it's base for long range shooting. I doubt you will have any issues at all regarding not enough internal adjustment. I have a Nikon M-308 BDC 800 that will be going on my Remington 700 AAC in .308. Should be a real shooter and I will be getting it out to 700 yards in the next few months. Make sure you check out Nikon's Spot On program, I think it will answer all your ballistic question's.

Yea, I just bought one for my 5R Mil-Spec. The reticle is not busy at all in my view because of the alternating circles & dots, I am speaking of the 4x16 unit. Your settings may vary in actual shooting of course, but the circles (this model small circles) are 200, 400, 600 & 800yds & dots are 300, 500 & 700, makes it very fast. I am looking at their optional dial for elevation, when the target allows time to click up. Should that work, I can click up from one of the tic marks instead of the crosshair & that will take care of the limited adjustment.

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